Synonyms for Prophet of doom:

• n.

  •Cassandra (noun)
  • doomsayer.
  •killjoy (noun)
  • partypooper,
  • whiners,
  • dampener,
  • grouch,
  • dampeners,
  • moaners,
  • complainer,
  • stick in the mud,
  • whiner,
  • killjoy,
  • wet blanket,
  • moaner,
  • doomsdayer,
  • GRINCH.
  •naysayer (noun)
  • party pooper,
  • gloomy,
  • sourpuss,
  • downer,
  • cynic,
  • misanthrope.
  •Other relevant words: (noun)
  • defeatists,
  • worriers,
  • Kill-joy,
  • depreciator,
  • depreciators,
  • gloomies,
  • defeatist,
  • crepehanger,
  • worrywart,
  • naysayer,
  • worrier,
  • pessimist,
  • crepehangers,
  • naysayers.

• Other synonyms:

  •scaremonger
  • alarmist.
  •Other relevant words (noun):
  • fortune teller,
  • dissenter,
  • Foreknower,
  • haruspex,
  • Divineress,
  • Foreshower,
  • malcontent,
  • prophetess,
  • predictor,
  • Prophesier,
  • grump,
  • monitor,
  • picklepuss,
  • lookout,
  • damper,
  • admonisher,
  • denier,
  • Refuser,
  • sentinel,
  • pythoness,
  • augur,
  • vates,
  • fortuneteller,
  • Geomancer,
  • seer,
  • Foreseer,
  • nihilist,
  • sceptic,
  • Gloomy Gus,
  • astrologer,
  • warner,
  • lookout man,
  • sentry,
  • diviner,
  • Presager,
  • spoilsport,
  • Seeress,
  • soothsayer,
  • prophet,
  • lighthouse keeper,
  • job's comforter,
  • Divinator,
  • psychic,
  • druid,
  • forecaster,
  • cassandra,
  • prognosticator,
  • palmist,
  • misery,
  • Flagman,
  • signaler,
  • negativist,
  • signalman,
  • Rejecter,
  • Cautioner,
  • Seek-sorrow,
  • calamity howler,
  • Foreteller.

Antonyms for Prophet of doom:

• n.

  • pessimist
    optimist.